From 5df2fa99cefdb4a93b052fb2b2fcdfb6d98999ec Mon Sep 17 00:00:00 2001
From: David Lebee <david@poweredsoft.com>
Date: Fri, 5 Feb 2021 14:09:07 -0500
Subject: [PATCH] just updating sample to support optional research.

---
 Demo/DynamicQueries/SearchContactParamsService.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Demo/DynamicQueries/SearchContactParamsService.cs b/Demo/DynamicQueries/SearchContactParamsService.cs
index 3620880..0d4e999 100644
--- a/Demo/DynamicQueries/SearchContactParamsService.cs
+++ b/Demo/DynamicQueries/SearchContactParamsService.cs
@@ -10,7 +10,10 @@ namespace Demo.DynamicQueries
         public Task<IQueryable<Contact>> AlterQueryableAsync(IQueryable<Contact> query, IDynamicQueryParams<SearchContactParams> dynamicQuery, CancellationToken cancellationToken = default)
         {
             var safe = dynamicQuery.GetParams()?.SearchDisplayName;
-            return Task.FromResult(query.Where(t => t.DisplayName.Contains(safe)));
+            if (!string.IsNullOrEmpty(safe))
+                return Task.FromResult(query.Where(t => t.DisplayName.Contains(safe)));
+
+            return Task.FromResult(query);
         }
     }
 }